Until last week my computer was running absolutely fine and I was able to play videos on every browser I have. It first occurred when I installed ATI Catalyst 10.6 on my computer. When I try to play online videos, it either crashes or a blue screen appears to me. This lasts for few seconds and it automatically restarts the computer once again. Sometimes I am able to play the videos but it appears green although the sound works fine. I tried uninstalling and reinstalling the drivers once again, but the problem persists.